Lock



Jan. 8 1924. 1,480,222

- L. PONGRACZ LOCK Filed Nov. 5. 1922 5 Sheets-Sheet 1 awwewtoz [A5240lo/vgeacz Jan. 8,1924. 1,480,222

. L. PONGRACZ LOCK Filed Nov. 5, 1922 s SheetS-fSheet =2 M524 0Po/vg/mcz I hi5 flag/m4,

Fig.2.

Fiq

Jan. 8

L. PONG RACZ LOCK Filed Nov. 5, 1.922 3 SheetsSheet 3 M5240 Pwvgmczawoenlto'o 85 his 6mm;

Patented Jan. 8, 1924;.

UN! TEE S T E S marzzz rarest erie-a LASZLO PONGRAGZ OF; NEwiYoR'K', N.Y.

LOCK.

Application filed November 3,1922. Serial me nt. v

To all whom it may concern:

Be it known that Laszno PONGRACZ, a citizen of Hungary, and residing at187 East 3rd Street, New York, N. Y have invented a new and usefulImprovement in Locks, of which the following is a specification.

This invention relatesto locks for doors of houses stores and similarplaces where strong and safe locking means are desired, butiinay be usedfor almost any purpose for which locks are employed at present. The mainobject of this invention is to provide aldevice ofthis character whichwill have exceptionally strong locking means, a long travel for itsbolt, and which, at the same time, maybe opened or closed with verylittleeziertion of force, by a comparatively simple key, and with aneasy and light turn ing motion of v the same.

Anotherobject of my lock is to provide a plurality of safety devices,using very sinr ple=and inexpensive means for the same which,nevertheless,- will give perfect secur ity against an unauthorizedopening of 'the lock.

Still a further object of my device is to provide a lock which issubstantial in con structionand has such locking means as best adaptedto resist the strongest burglarizing efiorts.

Still another object ofmy invention is to provide-alock of the abovementioned character which is simple in construction, has comparativelyfew parts, is easy to manufacturc and to assemble and is adapted to beHSGdWVltlIfilIHOS C anykind of doors, like left handed, right handed ordouble doors.

Foraa full description of the invention and the merits thereof and alsoto acquire a knowledge of the details of construction of the same foreffecting the various results mentioned hereinbefore, reference is to behad "to the following description and accompanying drawings.

VVhile' the essential and characteristic features ofthe inventionaresusceptibleo'f modification, still the" preferred embodiment: of theinvention isilliistrated in the accompanying drawings, in which Fig; 1is" aplanvi'ew of my lock seen from the outside of the door; thecovering plate" of the same, and certain other parts having-- beenremoved, and portions of it being broken" away so as to permit theuseof'alarger scale for drawing;

Fig; .2 is a-eplani VIEW? ofmy assembleddevice seen from theoutsideof'the. door to Which it is applied, portions. of the. samehaving been removed;

Fig. 3 is a similar view ofthesame from the inside of the'door,

Figs. 4,] 5, 6, 7 and 16 are detail views of parts ofmy insidelockingmechanism;

Figs. 8 and 9 are elevationaland bottom views, respectively, of 1 my.key, while Figs. 10, 11 and. 12Iareviews ofmy 1111.- proved key hole,and thesafety devices em,- ployed therein; I

Fig. 13 is a diagrammatic plan viewof my assembled lo'clr seen'from theoutside of the door and showingits bolt in a lockingposition;

Fig. 145' isa cross sectional view of a por} tion ofmy device,thesectionb'eing" taken; on the lines let-1 10f 'Figs- 2 and 3, portions ofthe lock having been removed;

Fig. 15 is a plan viewof the excenterused in closing and opening mylock;

Figs. 17. and 18 aredetail views. offthe element in. niylock used toclose or open the same from the inside.

Referring more in detail to the drawings, the operating v mech'anisinof,my lock. is housed in a preferably rectangular casing 19 having a bottom20 arranged towardsthe inside ofthe door, A baseplate 21 is secured tothe bottom of vthe casingand'. used to arrange portions of theoperating. mechanisms thereon and to give themoving elements a secureand smooth guiding surface. The'mainlocking element is a heavy bolt 22,guided by achannel 23securedto the door towards the inside of the sameand also by a heavy cover plate.24;,.p referably passing over thewholewidth of the door, strongly secured to the same andcoveringthe centerportion of my lock from the outside (Fig. The closing and openingmechanism of my device mainly consists..offa system of hinged links 25',operated by an excelnter de vice26, which in turn is controlled. bythekey 27 Figs. Sand fitting into the open. ing 28'inyexcenter'device26. Figy l shows the bolt and;, the operating ;devices in openposition. By turningthe. excenter26 in the direction of the arrow 29,its outwardly ext-ending pin 30will' engage the hole 32 in asemi-circular, 31 and, move. the same in the general. direction. of,arrow 29', as will'be more ffullylexplaineddiereinr, after. Thismovementwill'exerta pressureon the link member 33 hingedly connected atthe one end of the same to the extension 34 on semi-circular link 31,and at the other end to the inside termination of the bolt 22, andthereby cause said link, as well as the bolt 22, to move in a generallyright handed direction (Fig. 1). This will cause the bolt 22 to moveinto a locking position. In the portion of link 33 adjacent to the bolt22, a further link 36 is connected to the same and operates a final link37, hingedly connected to the lower end of link 36. When looking thedoor, the key, and with it the eXcenter 26, will execute about one halfof a revolution and the link elements mentioned hereinbefore will takeup the position shown in Fig. 13, bolt 22 having made a comparativelylong travel, assuring a firm locking grip of the same.

A sheet metal locking element 38 is pivotally secured, as at 39, to thebottom 20 of the casing in its lower portion and carries two upstandingposts 40 and 41 at its ends. A further locking element is secured in theform of a small metallic plate 42 to the outside end of the final link37, carrying a similar, but comparatively heavier and stronger,upstanding post 43 at its lower end adjacent to the vertical outsidesurface of the locking link 37. A spiral spring 44 connects the costs 41and 43 passing around the post 4 When the lock is set into a closedposition as shown in Fig. 13, the locking plate 38 will be movedupwardly under the pressure of the spring 44and will engage the lockingpost 43, thereby terminating the forward motion of bolt 22. A secondspring 45 is also secured to post 43 and connects the same with a post46 in the upper left hand portion of my device and serves to steady andequalize the movements of terminating link 37 and locking plate 38.Similarly, a spiral spring 47 engages an extension 48 on the furtherendof circular starting link 31 and connects the same to the post 46,thereby steadying its motion.

As will be seen by inspecting the drawings, the link mechanism employedin my lock will insure a steady and quick opening or closing of the sameand a long travel for its bolt 22 with a comparatively shortsemicircular movement of the executor 26 and of the key employed in thesame. 'At the same time the link movement will insure that a small forceexerted on the key will be able to move a comparativel heavy bolt 22.Said link movement and excenter will, further on, provide acomparatively j strong resistance against the forcible backward movementof the bolt 22, or the forcible opening of the same from its locking end49. A heavy strong plate 24 is used to cover my look towards theoutsideof the door (Fig. 2). Thesame is sunk into the material ate covering. Atthe one end of the same, I may employ a hinge device 50 securing it tothe stationary elements of the building or the other object to be lockedand giving additional strength and safet i to my looking means for saiddoor.

Towards the inside of the door, I employ the channel 23, mentionedhereinloefore, with its open side turned to the plate 24 and forming aguide for the bolt 22. ne surface of the bottom 20 of my case, turned tothe inside of the door carries certain inside opening and lockingelements 51 which cooperate with the safety devices employed in thekeyhole 52, secured to the heavy plate 24, on the outside of the door(Fig. 2). The elements and constructions of this keyhole and insidesafety and opening or locking devices and their cooperation will now beof the vertical walls of said sheet metal box and a small shaft 60 isrotatably arranged therein, carrying a double lever 61. Siaid lever hasat the end of its forward branch a downwardly extending nose 62 which inits normal position is pressed into the recess 55 of the keyhole byspiral spring 63. resting against the top wall of the box 57 {while theopposite branch 64 of the double lever extends into the slot 65 in theflange 53 of the keyhole and contacts with the outside surface of theplate 24, thereby preventing the forward end 61 from entirely droppinginto the recess The plate 24 has a hole 66 at this point correspondingto the kcyhole and adapted to receive an upper extension of the excenterwhich carries further operating and safety devices to cooperate with thekey.

The construction of said devices in the excenter and their connectionwith the keyhole devices is shown in a larger scaleon Fig. 14. Theexcenter 29 has two cylindrical extensions 67 and 68 in an upward anddownward direction, respectively. A. bore 69 passes through the centerof the excenter and its two extensions and said two extensions also havetransversal slots 70 and 71 cut at their ends coincident with the bore69 Fig. 15) passing across their entire widths and to a certain depth inthem. A small pin 72 is placed in the lower portion of said bore 69having certain inside locking and securingelements arranged on itsinside (lower) end-to be more fully described hereinafterand beingsteadily pressed in an upsliding movements.

against the heath-7e of-said pi n. Said-head is of a somewhat larger dia'rneter than-the rest of the 'pinan'd slidably lits into; the

bore 69. "Underneath the exeenter 29 :is

mounted the circular-starting link} 3 1" connecting with the furtherl-ink 33,- said links havin g downwardly extending bosses 1 at certainplaces whic'h serve as guiding surfaces on the plate 21. Similarbosses-'76 are employed on the upper surfaces of s'aidlin'ks at certainpoints of "the same 'servingfto gui'de'thein on the 'upper plate24in-]the ir The key adapted "to pass'the-obstacles placed in thekeyhole'and in the{bore 69 of the excenter and adaptedto catch saidexcenter and to turnthdsame therewithisillustrated in Figs. 8 and- 9.Itsf'stem is pref erably cylindrical and asmall cylindrical pin 77 atitslowermostpezttremity" which "is continued in aportion-where"the'twosides ot the cyl nder have'heenu'emoved,

leaving a small'wall '78 running diametrically across the bottom of thek ey. The lrey is then continued in the, full circular lower portion 79of 'the stem, "said lower "cireu'lar portion being divided from'theupper'circular stem by a-semi cireular groove 81. The kev cannot \passthrough the keyhole in position where thewall 78 would-present itscircular smaller-outside end'to the' 'iose 62 in the keyhole, since it'-would "hit the :1 same and would be prevented troinfurtli'erpenetration. The keyj inu'st he tiirned su Q-h a position that the wall78 will' pa ss with its broader surface (nearer the center of the stemof thelrey) 'un'd'erneath-t'heex tension 6.2 andwill' hit thesaniewitht'h'e lower edge 82 of the cylindrical portion. Thereupon the key is"turned and-th'ewall will gradually pressthe extension 62 out of therecess 55. against 'the "force-'01" "the spring 6% and mes-n11cylindrical 'portion can pass underneath said exteiision GQl The key nowmust be turned until the wall 78 will bein alignment with the slot 7Oacross the upper cylindrical extension 67 of "the PXCQDiTQl 29 and can''engage the same. Thereupon an inward pressure must be given to the keyfor two reasons: first, to move the pin 72 inwardly and permit the wall78 to fully engage the slot 70 and seeondlv because certain lockingelements (to ieribed presently) will still prevent the turning of theexcenter until they are put out of engagement by the inward movement oithe pin 72. The axial end pin 77 of the key serves to move said pin 72inwardly, upon coming in contact with its head 74:. When the inwardmovement of the key is terminated, the lower edge 82 of the cylindricalportion of the stem being pressed in close contact with the upperSurface .83 of the excenter extension 67 thekey can. ,be "turned around*andwilh rotate the excenter oular l in'k {3 1 by use ofthe 3'0, sisdescribed hereinhefore. The extension ea -on the double lever in thekeyhole wall will snap-into the circular groove 81 in the key an'dkeep-"said key in its positiomfat the sag/ie 't iine permitting a freerotation.v

withoutiany-key "and independently of the" ydock can be opened i'rom'the inside 1 opening devices thatwillpreve'nt the open- "ing ofthe'samefrom the outside before they are putfout of. engagement. For thispurpose the pin '72 is {extended inwardly to the finside ofthe dooraifdprovid'ed with screw' threads adjacent {to its insideter-iniiaationSd. An insidelitting device 85 is threaded on said'pinfmaide of "sheet metal an'd having the design shown in is: and mor'e"in detail in' Fig'sl '6 and 7, and is held 'downbya spring 86 whi'zrhis in secure threaded engagement "with the end "8 1 of I the pin72 andmade last in its position bya nut 'f87. The detailed design of sai dspring isshoWninFigl The dowi'iwardly bent extension 8'8 of the samewillhe secured to the bottom 20 of the casing 01 my loclz Fi g. 3while'theupper b'ranch Shwillbe pro- -vided with a threa'ded ho'le89'toengage the '-loweren' d' Slot pin FUn derne ath said springSd-andlifting device 85 I employ "a bent guiding and locking plate 90, securedto the bottom plate 20, as at '9l,and showing the detail constructionillustrated in "Figs. 't'und f5. The lifting device 85-and bent guideplate 9O' a're'n'ormally int'lfre'same direction, one above theotheryaind the extensienf9 2 "at the end of lit-ting device 85"refaelies inwardly in front of the end-93 of the bent guide pl ate 9 9.The'spriiag "86 is arranged in a -suhstanti ally perpendicular directionto that "of" the litting devire-and 'b'ent g'L'iid'e-plate Extendigenerally opposite direction to "that spring 'i'spla ced the innermostof theele' ments of t'he'inside devices of mylo'c-lrwhi'ch is theopening lever 94 -(Figs 3, 1'5, 17 and 18) 'Said opening lever ispreferably made of sheet metal and has an extended head 95 with twosuitably cut stops 96 and 97 and two upstanding teeth 98, adapted toengage the cross slot 71 in the lower extension 68 of the excenter 29.In the closed position of my lock spring 86 will exert a pressure on thelifting device 85 and place its tooth 92 in engagement with the shoulder96 of the opening lever 94, thereby preventing the rotation of saidlever and the opening of the look from the inside. When it is desired toopen the lock, the lifting device 85 is pulled outwardly by handle 99,against the force of the spring 86, the tooth 92 lifted out ofengagement and the lever 9 turned by the handle 100,

rotating the excenter 26 and opening the fter this, the catch 99 isreleased I lock. and the tooth 92 will snap back into engagement withthe opposite shoulder 97 securing the lock in an open position. It isobvious that when it is desired to open or close the lock from theoutside of the door, by using the key, the tooth 92 must first beremoved from engagement with the shoulders 96 and 97, respectively, andthis is effected by the terminal central pin 77 of my key, when the pin72 within the excenter is pushed inwardly thereby.

What I claim as my invention is 1. In a lock of the class described, acasing, a bolt within said casing, an excenter in said casing connectedto said bolt by a link mechanism; a key adaptedto turn said excenter andset said link mechanism and said bolt into motion in an inward oroutward direction; a pivotally mounted plate within said casingconnected with said link mecha nism and adapted to terminate its motion,and springs within said casing secured to said link mechanism, saidexcenter and said plate and adapted to steady and regulate theirmovements.

2. In a lock of the class described, a casing, a bolt within saidcasing, a'guide for said bolt, an excenter in said casing connected tosaid bolt by a link mechanism; a. key adapted to turn said excenter andset said link mechanism and said bolt into motion in an inward oroutward direction within said casing and said guide; a pivotally mountedplate within said casing connected with said link mechanism and adaptedto terminate its motion; axial extensions on said excenter extending inboth directions perpendicularly to said casing within the inside andoutside of the door, respec tively, to which said lock is applied, anaxial hole through the center of said excenter and its extensions,diametrical slots at the two ends of said extensions; a key adapted toengage the outside one of said slots and turn the excenter thereby;means to engage the inside one of said slots androtate said excentertherewith, and a locking pin and spiral spring arranged within saidaxial hole adapted to control said means.

3. In a lock of the class described, a casing, a bolt within saidcasing, a guide for said bolt, an excenter in said casing connected tosaid bolt by a link mechanism; a key adapted to turn said excenter andset said link mechanism and said bolt into motion in an inward oroutward direction within said casing and .said guide a pivotally mountedplate within said casing connected with said link mechanism and adaptedto terminate its motion; springs within said casing secured to said linkmechanism, said excenter and said plate and adapted to steady-andregulate their movements; axial extensions on said excenter extending inboth directions perpendicularly to said casing within the inside andoutside of the door, respectively, to which said lock is applied, anaxial hole through the center of said excenter and its extensions,diametrical slots on the ends of said extensions; a spring pressedlocking pin within said hole having means to normally prevent therotation of said excenter; a hollow cylindrical key guide mounted on theoutside of said door co-axially with said locking pin; a lever rotatablymounted within the wall of said hollow cylinder, a spring engaging saidlever and normally projecting its head within the keyhole; a cylindricalkey having means thereon to push said lever head out of said keyhole, toengage the slot on said outside excenter extension and to press saidlocking pin in an inward direction releasing the inside locking meansand meanson the inside of said lock adapted to release said lockingmeans and to rotate said excenter from the inside of the door,independently of said key.

In testimony whereof, I have signed my name to this specification in thepresence of two subscribing witnesses, this November, 1922.

LASZLO PONGRACZ. Witnesses:

FRANK G. 'HETYEY, JOSEPH KLEIN.

1st day of-

